2014 Buick LaCrosse Owner Manual - Page 47

Keys, Doors, and Windows If the engine still does not start, and the key appears to be undamaged or the light continues to stay on, try another ignition key. If the engine still does not start with the other key, the vehicle needs service. If the vehicle does start, the first key may be damaged. See your dealer who can service the theft-deterrent system and have a new key made. Do not leave the key or device that disarms or deactivates the theft-deterrent system in the vehicle. The security light on the instrument cluster comes on when there is a problem with arming or disarming the theft-deterrent system. The system has one or more transmitters matched to an immobilizer control unit in the vehicle. Only a correctly matched transmitter will start the vehicle. If the transmitter is ever damaged, you may not be able to start your vehicle. When trying to start the vehicle, the security light comes on briefly when the ignition is turned on. The immobilization system is disarmed when the ignition button is pushed in and a valid transmitter is found in the vehicle. 2-17 If the vehicle does not start and the security light stays on, there is a problem with the system. Turn the vehicle off and try again. If the RKE transmitter appears to be undamaged, try another transmitter, or place the transmitter in the transmitter pocket. See "Starting the Vehicle with a Low Transmitter Battery" under Remote Keyless Entry (RKE) System Operation on page 2-3. If the vehicle does not start with the other transmitter or when the transmitter is in the transmitter pocket, your vehicle needs service. See your dealer who can service the theft-deterrent system and have a new transmitter programmed to the vehicle. Do not leave the transmitter or device that disarms or deactivates the theft-deterrent system in the vehicle. Immobilizer Operation (Keyless Access) This vehicle has a passive theft-deterrent system. The system does not have to be manually armed or disarmed. The vehicle is automatically immobilized when the transmitter leaves the vehicle.